[one of my fav words for (usually anonymous) twats offering free advice]
/ˈkɪbɪts/ Show Spelled Pronunciation [kib-its] Show IPA Informal.
–verb (used without object)
1. to act as a kibitzer.
–verb (used with object)
2. to offer advice or criticism to as a kibitzer: to kibitz the team from the bleachers.
1925–30, Americanism; < Yiddish kibetsn, equiv. to G kiebitzen to look on at cards, deriv. of Kiebitz busybody, lit., lapwing, plover
It's an annoying looker on, hovering and offering free annoying advice, while not daring to join the game himself.